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When I drag the mouse cursor over the window's border the cursor's icon changes. When I then drag the cursor inside the window, the cursor does not change back to its regular appearance until I drag it outside of the window and drag it back in without activating the "resize window" cursor.

OS: Windows 10

Steps to reproduce:

1. Run any example with a resizable window.
2. Drag the mouse cursor over the window's border.
3. Drag the mouse inside the window.
4. Drag the mouse outside the window.
5. Drag the mouse inside the window from the top or drag the mouse very quickly inside the window.